import React, { useState, useEffect } from 'react';
import Web3 from 'web3';
import { useParams, Link } from 'react-router-dom';
import CourseRecordListABI from "../contract/ABIs/CourseList.json"; // 课程记录列表合约 ABI
import AdminABI from '../contract/ABIs/Admin.json'; // 管理员合约 ABI
import { Table, Modal } from 'antd';
import CourseRecordListAddress from "../contract/ADDRESSes/CourseListAddress.js" // 课程记录列表合约地址
// import '../static/indexcss/aacsss.css';
import gb from '../static/bootstrap/images/gb.svg';
import us from '../static/bootstrap/images/us.svg';
import user3 from '../static/bootstrap/images/user3.png';
import AdminNavBar from './nav/AdminNavBar';
import Head from './nav/Head.js';


const Admin_GetUserCourseInfo = () => {
    const [web3, setWeb3] = useState(null);
    // 使用 useParams 获取路由参数中的地址信息
    const { address } = useParams();
    const [contractCourseRecordList, setcontractCourseRecordList] = useState(null);
    const [contractAdmin, setcontractAdmin] = useState(null);
    const [isAdmin, setIsAdmin] = useState(false);
    // 用户地址
    const [userAddress, setUserAddress] = useState(null);
    //课程记录列表
    const [courseRecords, setCourseRecords] = useState('');
    const [IsList, setIsList] = useState(false);//控制是否显示列表
    const [categoryFilter, setCategoryFilter] = useState('');//用于通过分类查询
    const columns = [
        {
            title: '审核人地址',
            dataIndex: 'reviewerAddr',
            key: 'reviewerAddr',
            render: (text) => {
                const newText = text.toString(); // 将文本转换为字符串
                return <span style={{ color: 'black' }}>{newText}</span>;
            },
        },
        {
            title: '课程',
            dataIndex: 'course',
            key: 'course',
            render: (text) => (
                <span style={{ color: 'black' }}>
                    {text}
                </span>
            )
        },
        {
            title: '课程状态',
            dataIndex: 'status',
            key: 'status',
            render: (text) => (
                <span style={{ color: 'black' }}>
                    {text}
                </span>
            )
        },
        {
            title: '完成时间',
            dataIndex: 'completionTime',
            key: 'completionTime',
            render: (text) => {
                const newText = text.toLocaleString(); // 将文本转换为字符串
                return <span style={{ color: 'black' }}>{newText}</span>;
            },
        },
        {
            title: '平时成绩',
            dataIndex: 'courseScore',
            key: 'courseScore',
            render: (text) => (
                <span style={{ color: 'black' }}>
                    {text}
                </span>
            )
        },
        {
            title: '考试成绩',
            dataIndex: 'examScore',
            key: 'examScore',
            render: (text) => (
                <span style={{ color: 'black' }}>
                    {text}
                </span>
            )
        },
        {
            title: '总成绩',
            dataIndex: 'totalScore',
            key: 'totalScore',
            render: (text) => (
                <span style={{ color: 'black' }}>
                    {text}
                </span>
            )

        },
        // {
        //     title: '操作',
        //     key: 'action',
        //     render: (text, record) => (
        //         <button type="primary" onClick={() => handleAudit(record)}>
        //             审核
        //         </button>
        //     ),
        // }
    ];
    useEffect(() => {
        async function init() {
            // 连接到以太坊网络
            if (window.ethereum) {
                const web3Instance = new Web3(window.ethereum);
                try {
                    // 请求用户授权
                    await window.ethereum.enable();
                    setWeb3(web3Instance);

                    // 创建课程记录合约实例
                    const courseRecordListInstance = new web3Instance.eth.Contract(
                        CourseRecordListABI,
                        CourseRecordListAddress
                    );
                    setcontractCourseRecordList(courseRecordListInstance);

                    // 创建管理员合约实例
                    const adminInstance = new web3Instance.eth.Contract(
                        AdminABI,
                        address
                    );
                    setcontractAdmin(adminInstance);

                    // 获取当前用户的以太坊账户地址
                    const accounts = await web3Instance.eth.getAccounts();
                    const currentAddress = accounts[0];
                    // 获取管理员合约的 owner 地址
                    const ownerAddress = await adminInstance.methods.getOwner().call();
                    // 检查当前账户是否是管理员本人
                    setIsAdmin(currentAddress === ownerAddress);
                } catch (error) {
                    console.error(error);
                }
            } else {
                console.error('请安装以太坊浏览器插件，如 MetaMask');
            }
        }
        init();
    }, [address]);

    //获取学生课程记录
    const getUserCourseRecord = async () => {
        if (contractCourseRecordList) {
            try {
                // 获取当前用户的以太坊账户地址
                const accounts = await web3.eth.getAccounts();
                const fromAddress = accounts[0];
                const records = await contractCourseRecordList.methods.getUserCourseRecord(userAddress).call({ from: fromAddress });
                setCourseRecords(records)
                setIsList(true);//让列表显示出来
                alert("获取成功！")
            } catch (error) {
                console.error(error);
                alert("获取失败！")
            }
        }
    };

    const handleFilterActivity = async () => {
        if (contractCourseRecordList) {
            try {
                const filteredActivityList = courseRecords.filter((activity) => activity.course === categoryFilter);//设置通过类别查询
                setCourseRecords(filteredActivityList);

                setIsList(true);
            } catch (error) {
                console.error(error);
            }
        }
    };
    return (
        <div>
            {/* 如果当前账户不是管理员，则显示提示信息 */}
            {!isAdmin && (<div>您没有权限访问此页面。</div>)}

            {/* 管理员界面 */}
            {isAdmin && (
                <div className="page-wrapper" >
                    <div className="main-container" style={{
                        backgroundColor: '#FFFFFF'
                    }}>
                        <AdminNavBar address={address}></AdminNavBar>

                        <div className="app-container">
                            <Head></Head>

                            <div className="app-body">
                                <div className="container-fluid">
                                    <div>
                                        <main className="page hire-me-page">
                                            <section className="portfolio-block hire-me">
                                                <div className="container">
                                                    <div className="border rounded border-0 shadow-lg p-3 p-md-5"
                                                        data-bs-theme="light"
                                                        style={{
                                                            backgroundColor: 'rgba(36, 36, 41, 0.6)'
                                                        }}
                                                    >
                                                        <h1>获取学生课程记录</h1>
                                                        <div className="d-flex justify-content-end mt-3">
                                                            <div className="input-group mb-3" style={{ maxWidth: '300px' }}>
                                                                <input
                                                                    type="text"
                                                                    className="form-control"
                                                                    placeholder="输入课程查询"
                                                                    aria-label="课程查询"
                                                                    aria-describedby="basic-addon2"
                                                                    value={categoryFilter}
                                                                    onChange={(e) => setCategoryFilter(e.target.value)}
                                                                />
                                                                <div className="input-group-append">
                                                                    <button className="btn btn-primary btn-lg d-block w-100" type="button" onClick={handleFilterActivity}>搜索</button>
                                                                </div>
                                                            </div>
                                                        </div>
                                                        <div className="mb-3">
                                                            <label className="form-label" htmlFor="name">用户地址</label>
                                                            <input className="form-control item" id="name" type="text" placeholder="用户地址" value={userAddress} onChange={(e) => setUserAddress(e.target.value)} />
                                                        </div>
                                                        {IsList ? (
                                                            <Table
                                                                dataSource={courseRecords}
                                                                columns={columns} // 确保你已经定义了columns
                                                                pagination={{
                                                                    pageSize: 2,
                                                                    showTotal: false, // 隐藏总页数
                                                                    showSizeChanger: false, // 隐藏页面大小选择器
                                                                    itemRender: (current, type, originalElement) => (
                                                                        <span style={{ color: 'black' }}>
                                                                            {current}
                                                                        </span>
                                                                    ),
                                                                }}                                            //  onRow={onRow} // 确保你传递了onRow函数，用于保存对应的id
                                                            />
                                                        ) : (
                                                            <div>No activity information available.</div>
                                                        )}
                                                        <div className="mb-3 mt-4">
                                                            <button className="btn btn-primary btn-lg d-block w-100" onClick={getUserCourseRecord}>查询</button>
                                                        </div>

                                                    </div>
                                                </div>
                                            </section>
                                        </main>
                                    </div>
                                </div>
                            </div>
                            <div className="app-footer">
                                <span>
                                    © Bootstrap Gallery 2023
                                </span>
                            </div>
                        </div>
                    </div>

                </div>
            )}
        </div>
    );
}

export default Admin_GetUserCourseInfo;